Nailing machine



A. A. APPELL NAILING MACHINE Aug. 5, 1958 2 Sheets-Sheet 1 Filed Dec. 7, 1953 Fig.2

INVENTOR. ALBERT A. APPE LL Aug. 5, 1958 A. A. A'PPELL 2,845,625

NAILING MACHINE Filed Dec. 7, 1953 2 Sheets-Sheet 2 III INVENTOR. ALBERT A. APPELL larly to hand tools or the United States Patent '25845625' NAILING MACHINE- Alhert A. Appell, North Hollywood, Calif. qApplication December 7, 1953, SerialrNo. 396,367 3 Claims. (21. 1+6) This. invention relates to machinery and more particugeneral class known as mechanical drivers, and particularly to nail drivers which operate mechanically and under the control of but a single operator. The invention has, among its objects, the production of means of the kind described that is simple, durable and compact in structure, inexpensive to make, manufacture and operate, dependable and eflicient in use and service and convenient to handle.

An object of the invention is to provide a simple, practical and eflicient nail driving machine that may be operated on either electrical or pneumatic power and which is adaptable for constant and continuous use and rough handling.

Another object of the invention is to provide a more satisfactory nailing machine that incorporates ,novel features for feeding nails from a source of supply to the position to be struck by the hammer element.

An additional object of the invention is to provide in a machine of the character described novel means for positioning the nail prior to being struck by the hammer element.

Other and additional objects and advantages Will appear and be brought out more fully in the following specification, reference being had to the accompanying drawing wherein:

Figure 1 is a side elevation view of a nailing machine incorporating the invention.

Figure 2 is a partial end elevation view of the same.

Figure 3 is a sectional view taken along the line 33 of Figure 1.

Figure 4 is a fragmentary view of the hopper link mechanism shown in Figures 1 and 3.

Figure 5 is a partial view in sectional elevation of the structure shown in Figure 1 showing the parts after a nail has just been driven home in a workpiece.

Figure 6 is a sectional view taken along the line 66 of Figure 5.

Figure 7 is the sectional view 7-7 of Figure 5.

Figure 8 is the fragmentary view showing the structure also shown in Figure 5 but with a nail in position to be engaged by the hammer.

Figure 9 is a separate view of the nail selector means shown in Figures 5 and 6.

Referring more particularly to the drawings the numeral 1t} designates generally a frame or body which is elongated and extends upwardly from a base 11 which may include a stirrup 12., the body having a bore 13 in which is positioned the hammer piston 14 which is suitably driven by the reciprocating driving element 19 of a pneumatic or electric hammer generally designated 15.

Body has a side extension portion 16 which provides pivots 17 to which pivots are secured to one end of a hopper frame 18 on which is mounted a hopper 20 for holding a plurality of nails. Hammer driving element 19 is carried by a casing structure 21 which has a pair taken along the line of sidev extensions 22 from whichextend downwardly a tion shown in Figure 1 to thatshown inFigure 5, the nail .pair of guide rods tension 24 happen 20 willbe tilted'downwardly. A shield 20a is positioned in hopper ming. of nails in-the slot, 7 Side extension 16 is formed aboveslot 27 to prevent jamwith a slot and body .111 is hollowed forming a passage 29, the lower portion of which is inclined at 30 and is formed with a pocket or recess 31, the lower portion of which is inclined at 32 to provide a seat for a nail restraining roller 33. The lower end of bore 13 is enlarged, in which enlargement is a sleeve 34, the upper portion of which is cut away at the right side and is formed with an aperture 35, the lower edge of which is turned upwardly to provide a seat for roller 33, thus permitting the roller to extend partially into the sleeve but permitting space for the shank of a nail, the head of which rests on the upper curved portion of the roller.

Side extension 16 is formed with an inclined passage 36 and there is thus formed a pair of spaced inclined guideways 37 for a plurality of nails which are moved therealong by gravity after being ejected from the hopper 20 when in the upper inclined position, as shown in Figure 1. Positioned at the lower end of passage 36 in a bore 10a in the body 10 is a split sleeve 38, and surrounding the sleeve is a selector ring 39 which is rotatable on the sleeve. Ring 39 has radial arms 40 and 41, and a spring 42 is secured between arm 40 and an adjacent portion of body 10 to restrain the ring from rotation. Ring 39 has an angular slot 43 formed in the lower position thereof, the slot having a radial portion 43a, as shown in Figure 9. An arm 44 fixed to the hopper frame 18 is arranged to engage under selector ring arm 41 for rotating the ring clockwise, as shown in Figure 6, when the hopper moves to the inclining downward position, as shown in Figure 5. When the ring has been thus rotated, a nail is moved by gravity and vibration down guideways 37 and enters sleeve 38 and the radial portion 43a of slot 43.

When the hammer body 15 is raised to the position shown in Figure 1, the ring 39'is rotated by the spring 42 back to the position shown in Figure 6, and the nail which has entered slot 43 is shifted out of sleeve 38 and dropped downwardly in passage 29 to the position shown in Figure 8, ,and is arrested by roller 33.

Body 10 is formed with a stop shoulder 45, and a stop rod 46 in line therewith is adjustably secured to a shoulder 47 formed on casing structure 21. By this construction the stroke length of the hammer piston 14 may be varied.

The operation of the invention should be clear from the foregoing description. Figure 5 shows the condition of the parts with a nail just driven home in a workpiece, and upon the hammer unit 15 being raised to the position of Figure 1, one or more nails are delivered from the hopper 20 to the guideways 37, and'the nail in the selector ring is then dropped downwardly to the arresting roller 33 in readiness for the next hammer stroke. When the hammer body 15 is lowered and hopper 20 is tilted downwardly as in Figure 5, ring 39 is rotated by arm 44 and a nail from passage 36 enters ring slot portion 43a. This can be repeated rapidly and effectively as long as nails are supplied by the hopper to the hammer body.

2,845,625 3 4 Having described my invention what I claim is: has a spring biased second radial arm for restoring said 1. In a nailing machine as described including a body ring to its original position after being actuated to shift having a vertical bore andfa passage alongside of said nails to said passage. bore, a hammer casing having a hammer piston and reciprocably mounted with said piston coaxial with said 5 References C t d n the fil of this patent body and said body having an inclined guideway for UNITED STATES PATENTS nails and a tiltable hopper adjacent said guideway and coactable therewith to supply nails thereto, the inven- 145,818 slPlth 1873 Lion which comprises a split bearing sleeve in said guide- 544,225 mghjam 6, 1395 way, a rotatable nail selector ring on said bearing sleeve, 10 403,843 l- 9 y 21, 1899 and means to rotate said selector ring to shift nails from 691,725 Mlulken 21, 1902 said guideway to said passage when said hopper is re- 926,412 Hay-$56!! June 9, 9 9 turned from tilted position, said sleeve providing a chan- 1,554,128 RQbertson P 1925 nel for the headset said nails. 1,613,473 M1 1 I n. 4, 1927 2. Structure according to claim 1 wherein said ring 2,546,354 Bacon Mar- 27, 1951 is rotatably mounted on said sleeve and has a radial 2,652,564 Bacon p 1953 a t t' d "d ho h t t' lecvgla lng arm an sai pper as a ring arm ac ua mg REIGN PATENTS 3. Structure according to claim 2 wherein said ring 44 ,389 Great Britain P 1936 

